“Concussion” – the new movie about football and head trauma – is a beautiful film beautifully rendered. That may be an odd choice of words for a story about two of the sometimes uglier games men play – power and violence – but then, football, like humanity, is a multifaceted subject, at once mindless and Shakespearean, as one character notes.

This football tale is told from the viewpoint of an outsider who longs to be an insider, a Nigerian immigrant who has grown up thinking of America as God’s country. Armed with a slew of degrees from Nigeria, New York and London, Dr. Bennet Omalu (Will Smith) is a proud, accomplished but obscure forensics pathologist working for Dr. Cyril Wecht (Albert Brooks), the chief medical examiner in Allegheny County, Pa., in 2002 when he is given what he describes as “a dangerous gift” – a gift for knowing. ...

Jordan Spieth at the A T & T Championship in February. Is the Masters’ champ and new golf phenom on his way to a rivalry with Rory McIlroy? Photograph by Erik Charlton.

On a recent installment of the “PBS NewsHour,” John Feinstein, author and sports columnist for The Washington Post, was asked to comment on the ascent of Jordan Spieth, golf’s latest phenom. He said he thought that Speith and Rory McIlroy had the opportunity to develop a great rivalry now and that for him, rivalries rather than dynasties make sports interesting.

Tell that to the fans of the New York Yankees, Pittsburgh Steelers, San Francisco 49ers, New England Patriots and Green Bay Packers in various eras. They’ll tell you there’s nothing sweeter than the monotony of winning year after year.

But I know what he means: Fed and Rafa, Rafa and Nole, Nole and Andy, Andy and Fed, Fed and Nole, Andy and Rafa – tennis has always thrived on great rivalries and has a round robin of them going on now. Even when you have a dynasty like the Yanks have been, they were made better by their clashes with the Bosox (even if it sometimes tore your heart out as a Bombers’ fan). ...

‘A dangerous gift’: ‘Concussion’ and the NFL

Rivals spark sports